Figure 3 – EGS data model for energetic and non-energetic mineral resources (Waardenburg & Kerkenaar, 2012b). These insights were reported to the INSPIRE thematic working groups in detail to improve the final versions of the data specifications (Gruijters & Fruijtier, 2011). Figure 3 describes the relational data model for energy and mineral resources used to implement the EGS data model (Waardenburg & Kerkenaar, 2012b).
3.2 Portugal – web services implementation In order to be able to deliver data to EGS system the Portuguese partner – LNEG, proceeded to update their national geographic information system – SIORMINP – “Information system of Portuguese mineral occurrences and resources”, which is a in MS Access, which contains information on 2277 mineral occurrences, resources and reserves, and their metadata. The SIORMINP data base is a relational model in which each mineral occurrence or resource is connected to a wide setoff auxiliary tables, each one containing data for a particular subject. This relational database has the information stored in an organized way in the form of tables, queries, forms, reports and macros, interacting with each other and allowing access to data by different users (Fortes et al., 2005). The main objectives that leaded to the development of this database were: x To improve the geoscientific, technical and economic knowledge of the mineral occurrences, resources and reserves in mainland Portugal; x Promote mining development within the national territory by selecting and diffusing information to exploration companies of areas with mining potential; x Contribute to territorial classification;
x Integration of this database with other information as geological maps, geochemistry data and geophysical data to create a more complete geographic information system; x Development of a methodology for the definition of occurrences and mineral resources favourability maps using methods of geographic data mining (GDM). These favourability maps will be essential tools for mining exploration, management, sustainable development of the geologic resources and mitigating the negative environmental impacts of mining (Fortes et al., 2005). Since 2005, the SIORMINP DB was integrated in the LNEG’s geoportal (http://geoportal.lneg.pt/), which is a spatial data infrastructure of integrated services to support the management and visualization of spatial data, which aims to provide, in a web environment, the georeferenced information related to the different activities of LNEG. At LNEG’s geoportal is possible to query the SIORMINP DB (Fig. 4). This web portal, using spatial information is not only for graphically visualizing the information on a map or showing the attribute information per geographical object in a table or popup screen. This has, lead to a user interface where a user can easily “ask” a question that gets answered in different ways suiting his needs. After adopting the general rules set by the INSPIRE Directive, as well as the acceptance of the EGS conceptual data model (Fig. 3), LNEG up dated their national geographic information system (SIORMINP) and published their datasets using OGC compliant Web services providing their harmonized mineral occurrences and resources data to the project.